gh-134908: protect `textiowrapper_iternext` with critical section#134910

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colesbury merged 8 commits intopython:mainfrom

duaneg:gh-134908

Jun 2, 2025

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duaneg commented May 30, 2025 •

edited by bedevere-app bot

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textiowrapper_iternext calls _textiowrapper_writeflush but does not take the critical section, making it racy in free-threaded builds.

Issue: Crash when calling textiowrapper_iternext and writing to a text file simultaneously in ft build #134908

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